Cron environment issues

In Ubuntu, I am having a lot of trouble running a script that uses a .pm module from crontab. When I try to do so, I get an error that reads:

Can't locate <perl_module>.pm in @INC (@INC contains:<list_of_directories_that_do_indeed_have_the_pm_file>)

I was wondering if it would be possible to get the crontab to run the script as a specific user, in their environment. The script works perfectly from he command line...
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Gerwin Jansen, EE MVEConnect With a Mentor Topic Advisor Commented:
>> Ok, I have something that works.
All the env variables you've added are usually set in .profile or .profile.user

How are these env settings done for that user normally? If you just add that 'setting' script or profile to your cron entry then it should work. Alternative is what you've done, put these settings in a script and call that before running the .pm - same solution just a different implementation.
In root's crontab (not /etc/crontab!) you can do:

* * * * * su - username -c /path/to/script ...
Monis MontherSystem ArchitectCommented:
What user are you using to run the command? From that user

crontab -e

then as woolmilkporc suggested

* * * * * su - username -c /path/to/script
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Only root can do "su - username" without password.
Gerwin Jansen, EE MVETopic Advisor Commented:
You could call your .profile first, like this:

00 10 * * * /home/user/.profile ; /path/to/script
stakorAuthor Commented:
I tried the root path. I put in:

*/15 * * * * su -l <username> -c <command>

And, in a sureal turn of events, it is having the same error that I had in <username>'s crontab.

I am now trying the /home/<username>/.profile;<command>

idea. I'll post in about 20-25 min with how that works out.  Something is up, but I don't know what...
stakorAuthor Commented:
Sadly, same error.
Why "su -l" ?  It's just "su - ..." I.e. a single dash surrounded by spaces after "su".

Nothing sureal here ...
stakorAuthor Commented:
I think I fat fingered it in the beginning. I used -<username>. I tried to get around this after man'ing su, and saw -l (at least I think I saw) that -l was another valid designator. I just tried it with - <username> and that had the same problem as "-l". It still can't find the .pm file.
stakorAuthor Commented:
Ok, I have something that works. If I add:

setenv PERL_MB_OPT "--install_base /home/<USER>/perl5"
setenv PERL_MM_OPT "INSTALL_BASE=/home/<USER>/perl5"
setenv PERL_LOCAL_LIB_ROOT "/home/<USER>/perl5"
setenv PERL5LIB /home/<USER>/perl5/lib/perl5/i686-linux-gnu-thread-multi-64int:/home/<USER>/perl5/lib/perl5
setenv PATH "$PATH":/home/<USER>/etc/turfserf/etc:/home/<USER>/perl5/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/sbin:/usr/games

to a csh file that calls the perl script, it works...
SurranoSystem EngineerCommented:
I believe you may as well put environment variables at the top of your crontab of the user in question.
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